Is The Emperor Naked?

Do you need a Ph.D in Fashion to see that the emperor is naked? Do you have to study art for decades before your criticism of it becomes valid? These questions might seem odd, but I hope you understand the underlying message.

On the other hand, I wouldn't take drug prescriptions from someone who did not have a medical degree. Some subjects require rigorous understanding, and some don't. I think you just gave examples of 2 subjects that don't require such rigorous understanding. Understanding physics, on the other hand, is different because it requires an understanding of the mathematical framework, and sometimes can also be very counter-intuitive (eg, linear superposition of states).